摘要
采用凹凸棒土(AT)对魔芋葡甘聚糖(KGM)进行共混改性,制备了KGM/AT共混溶液,以95%的酒精为凝固浴,利用注射器模拟湿法纺丝制备了KGM/AT复合纤维,通过纤维的纵向形态结构观察初步研究了AT对KGM溶液可纺性的影响,并对纤维的力学性能、吸水性能进行了测试。结果表明,KGM/AT溶液具有一定的可纺性,但是在AT用量较高时,纤维呈现出的弱节、疵点等结构不均匀性更为明显;适量的AT经过适当的牵伸有助于分子链取向,可以提高复合纤维的力学性能;此外,AT用量较低时有助于KGM纤维吸水,最高吸水倍率提高了近50%。
Attapulgite （AT） was introduced to modify konjac glucomannan （KGM） by solution blending, and KGM/AT blend aqueous solutions were obtained. KGM/AT fibers were prepared in the 95 % alcohol coagulation bath using a syringe simulated wet spinning experiment. The spinnability of blend solutions with different AT loadings was investigated according to the longitudinal morphology of KGM/AT fibers. The mechanical properties as well as water absorbing capacity were also studied. It is found that KGM/AT solutions have certain spinnability while irregular structures of KGM/AT fibers such as weak-links, defects, increase with AT loadings increasing. AT nanorods with proper amount is beneficial to the orientation of KGM molecules during the drafting progress, attribute to the improvement of the mechanical properties of KGM fibers. The water absorption of KGM fibers is improved by the addition of low AT loadings, thus the highest water absorbing capability increases by nearly 50%.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第3期143-146,共4页
Polymer Materials Science & Engineering
基金
国家自然科学青年基金(51102214)
先进纺织材料与制备技术教育部重点实验室(浙江理工大学)优秀青年人才培养基金(2010QN03)
浙江省文物保护科技项目
关键词
葡甘聚糖
凹凸棒土
湿法纺丝
力学性能
吸水性能
konjac glucomannan
attapulgite
wet spinning
mechanical property
water absorlJing capacity
